Results 141 to 150 of about 758 (171)
Thelytokous parthenogenesis in the damselfly Ischnura hastata (Odonata, Coenagrionidae): genetic mechanisms and lack of bacterial infection [PDF]
Heredity, 2009 Thelytokous parthenogenesis, the production of female-only offspring from unfertilized eggs, has been described in all the insect orders, but is a rare phenomenon in the Odonata (dragonflies and damselflies). The only-known case of parthenogenesis in this group is the North American damselfly species Ischnura hastata, which has parthenogenetic ...
Adolfo Cordero-Rivera
exaly +6 more sources
Thelytokous parthenogenesis, male clonality and genetic caste determination in the little fire ant: new evidence and insights from the lab [PDF]
Heredity, 2009 Previous studies indicate that some populations of the little fire ant, Wasmannia auropunctata, display an unusual reproduction system polymorphism. Although some populations have a classical haplodiploid reproduction system, in other populations queens are produced by thelytokous parthenogenesis, males are produced by a male clonality system and ...
Julien Foucaud, Jérôme Orivel
exaly +5 more sources
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Thelytokous parthenogenesis and dominance hierarchies in the ponerine ant,Platythyrea punctata
Die Naturwissenschaften, 1995Jürgen Heinze +2 more
exaly +2 more sources
Die Naturwissenschaften, 2010
Thelytokous parthenogenesis in which diploid females are produced from unfertilized eggs, was recently reported for some ant species. Here, we document thelytokous reproduction by queens in the polygynous species Pyramica membranifera. Queens that emerged in the laboratory were kept with or without workers under laboratory conditions.
Fuminori Itô +2 more
exaly +3 more sources
Thelytokous parthenogenesis in which diploid females are produced from unfertilized eggs, was recently reported for some ant species. Here, we document thelytokous reproduction by queens in the polygynous species Pyramica membranifera. Queens that emerged in the laboratory were kept with or without workers under laboratory conditions.
Fuminori Itô +2 more
exaly +3 more sources
Experimental and Applied Acarology, 1991
Based on sex-ratio analysis, thelytokous parthenogenesis is shown to be widespread in the mite taxon Desmonomata (Nothroidea sensu lato), with four of the seven families completely thelytokous and a fifth nearly so. Monthly samples from populations in central New York State, Japan, and Canada, representing 22 species in five families, indicate that sex-
Norton Roy A
exaly +2 more sources
Based on sex-ratio analysis, thelytokous parthenogenesis is shown to be widespread in the mite taxon Desmonomata (Nothroidea sensu lato), with four of the seven families completely thelytokous and a fifth nearly so. Monthly samples from populations in central New York State, Japan, and Canada, representing 22 species in five families, indicate that sex-
Norton Roy A
exaly +2 more sources
The frequency of thelytokous parthenogenesis in European-derived Apis mellifera virgin queens [PDF]
Apidologie, 2019 Thelytokous parthenogenesis is the asexual production of female progeny. In the honey bee, Apis mellifera, thelytoky is unknown from mated queens, but can occur in virgin queens that have been induced to lay. We used microsatellite markers to quantify theltyoky in virgin A.
Ros Gloag +2 more
exaly +2 more sources
Thelytokous Parthenogenesis in Eusocial Hymenoptera
Annual Review of Entomology, 2013Female parthenogenesis, or thelytoky, is particularly common in solitary Hymenoptera. Only more recently has it become clear that many eusocial species also regularly reproduce thelytokously, and here we provide a comprehensive overview. Especially in ants, thelytoky underlies a variety of idiosyncratic life histories with unique evolutionary and ...
Christian, Rabeling +1 more
openaire +2 more sources
What mechanistic factors affect thelytokous parthenogenesis in Apis mellifera caponises queens? [PDF]
Apidologie, 2020 The Cape honey bee (Capensis) is unusual in that workers can produce viable female offspring via thelytokous parthenogenesis. In contrast, mated queens never reproduce thelytokously, even though they could benefit from doing so when generating daughter queens.
Sarah E Aamidor +2 more
exaly +2 more sources
A single locus determines thelytokous parthenogenesis of laying honeybee workers (Apis mellifera capensis) [PDF]
Heredity, 2005 The evolution and maintenance of parthenogenetic species are a puzzling issue in evolutionary biology. Although the genetic mechanisms that act to restore diploidy are well studied, the underlying genes that cause the switch from sexual reproduction to parthenogenesis have not been analysed. There are several species that are polymorphic for sexual and
H Michael G Lattorff +2 more
exaly +3 more sources